Dear Esther: Landmark Edition

From Wikipedia:

“Dear Esther is a 2012 adventure game developed and published by The Chinese Room. First released in 2008 as a free modification for the Source game engine, the game was entirely redeveloped for a commercial release in 2012. The commercial version was released for Microsoft Windows in February 2012 and OS X in May 2012; ports for PlayStation 4 and Xbox One were released by Curve Digital in September 2016.”